Draft-deflector for lamp-burners.



J. K. DAVIS. DRAFT DEFLECTOR FOR LAMP BURNERS. APPLICATION FILED JUNE 14. 1915.

Patented Aug. 24, 1915.

COLUMBIA PLANOGRAPH co. \VASHI nsorrnn stares reta ler? oration.-

JOSEPH 1r. DAVIS, or WATERBUR-Y. CONNECTICUT, assrenon TO SGOVILL numerictronrim company, or wa'rnnnniea, NECTICU'I.

CONNECTICUT, A GGRPORATION OF CON- DRAFT-DEFLEG'IOR FOR LAllEP-BURNERS.

Patented Au 2a, 1915.

Application filed June 14:, 1915. Serial No. 33,977.

To aZZto/wmit may cmmern i I Be it known that I, Josnrn K. DAVIS, a citizen of the United States, residingat aterbury, in the county of New Haven and State of Connecticut, have invented a certain new and useful Improvement in Draft -Deflectors for Lamp-Burners, of which the following is a full, clear, and e1:- act description.

This invention relates to the type of draft deflectors for lamp burners forming thesubjects of the Coons Patent No.-l,087,280.and the Sanderson Patent No. 1,087,3s3, both dated February 17 191 i, and the" object of the invention is to adapt deflectors of this type for use in the smaller sizes of burners, and at the same time conserve the advantages of the deflectors of the Coons and San derson patents in the control of the draft and the consequent production of good illumination.

I In this invention, as in the inventions of the patents mentioned, the deflector is preferably formed of a single piece of sheet metal,- without seams, and the deflector is pr vided with corner projections at its top which engagea horizontal groove surroundin the flame slot in the burner cone in order to support the deflector in position so as to insure a pas 'age all around it both between itself and the wick tube and itself and the surrounding cone, thus affording practically unimpeded and unobstructed passageways for the draft; there being provided preferably, means to prevent the deflector from tin-hing in the cone, as I will proceed now to explain and finally claim.

In the accompanying drawings illustrating the invention, in the several figures of which like parts are similarly designated, Figure l. is a perspective view of the de doctor and Fig. :2 is a side elevation thereof. Fig. 3 is a top plan view of a burner with the deflector in position, the cone being in horizontal section on the plane of line B, Fig. l. F 4.- is a transverse section of the cone and deflector, the section being taken in. the plane of line C D, Fig. 3, and the spring catch of the cone broken elf. Fi 5, 6, 7 and 8 illustrate the blank, andtirst, sec end and. third operations employed in form. ing the deflector, the finished article of the final step being similarly shown in Fig.

All of the views are enlarged, but they are intended toshow the invention in its special use;on the smallersizes of lamp burners.

'lhe deflector comprises the side walls 1,

the end walls 2 provided with the vertical corrugations or grooves 3, and the open top surrounded by the connecting top web a, all in one piece, without seams or joints.

The side walls and the end walls may be respectively parallel or divergent or inclined, as may be desired. These walls are separated at thecorners by open spaces 5, and the top web 4: has the outwardly extending projections 6 overlying these spaces and serving to engage the knurl or groove 7 in the burner cone 8 surrounding the flame slot 9 therein horizontally, in order to support or suspend the deflector in the cone free of thecone, wick tube 10, and perforated dis tributer plate 11 of the burner 19/. These projections are of arch form transversely for strength and so as to afford the least possible obstruction to theflow of air. The deflector is snapped or sprung into the groove, without the necessity of cutting holes in the cone, and it is held in position therein and keptfrom turning by neans of the indentations 13 in thejgroove which cooperate with the adjacent projections for the purposes stated. Instead of indentations, any other suitable obstructions may be used to keep the deflector in alineinent with the flame slot in the cone, or with the wick-tuba Preferably, these indentations are so located as to come between two adjacent projections, to thus resist turning in opposite directions.

Preferably the top web of the deflector is inclined slightly at its sides and pronouncedly at its ends, as indicated at 14: and 15, respectively, for strength and to facilitate and direct the passage of the air both through the interior of the deflector and outside of it.

In the manufacture of the deflector, a

blank such as shown in Fig. 5, may be used,

and the contour further developed, as in Fig.

8, and finally the end corrugations or grooves supplied, as in Figs. 1, 2, 3 and 4c.

The inclination of the top web at the ends directs the draft toward the center of the 1 flame, or, rather, away from its ends, and

The corrugations or grooves may or may not be used, or they may be replaced by other equivalent means; and otherivariations are intended'to be within the scope of the claims following; c

What I claim is '7 1; A draft deflector for lamp burners having side walls, end walls, a top web, and corner projections extending out laterally from the top web and adapted to engage a groove in the burner cone to support the deflector therein.

2. A draft deflector for lamp burners,

having side walls, end walls, a top web, and corner projections of arch form in cross-' section and'end View and-extending outlaterally from the top web and adapted to engage a groove in the burner cone to support the deflector therein.

3. A draft deflector for lamp burners, having side walls and end walls with intervening open spaces at the corners, a top web, I and corner projections overlying said open 7 spaces and extending out laterally from the top web andadapted to engage a groove in The end corrugations or the burner cone to support the deflector therein, I f 4. A draft deflector for lamp burners,

having side walls, end walls, a top web inweb over the open corners and adapted to engage a groove inthe burner cone to support the deflector therein. 7

6. A, draft deflector for lamp burners, having side walls, end walls, a top web, and corner projections extending out laterally from the top web and adapted to engage a groove in the burner cone to support the deflector therein, combined with means to position the deflector in the cone and prevent it from turning.

7. A draft deflector for lamp burners,

having side walls, end walls, atop web, and 1 corner projections extending out laterally from the top web and adapted to engage a groove in the burner cone to support the deflector therein, combined with an obstruction in the groove'toengage the projections to prevent the deflector from turning in the my hand thisllth" day of June A. D. 1915 V JosErH K: DAVIS} Witnesses: A V i L. P. SPERRY, B. P. HYDE.

In testimony whereof]: have hereunto set Copiesof this patent may be obtained for five cents eachpby addressing" the Commissioner of Patents, V

' WashingtomD. G, l 

